
Channel
Not Always Water
While often for liquids, 'channel' can also refer to pathways for other substances or objects.

The scientist designed channels for the sand to flow through.
Metaphorical Use
'Channel' can be used metaphorically to describe the path of abstract things like ideas.

They opened a channel for discussion among the employees.
Compare with
CanalConduitDitchMediumPassageRouteVenueWaterway
WordUp Chrome Extension
As you browse the web instantly look up words you don’t know.
Get Chrome Extension